Pump



April 11, 1933. E R, MUNN 1,903,721

PUMP

Fil'ed Sept. 25, 1931 4 Sheets-Sheet l ffy. j'.

Za/wz?? 23.1722212222@ f April 11, 19:53.`

E. R. MUNN PUMP Filed Sept. 26, 1951 4 Sheets-Sheet 2 Bymwh llomey E. R. MUNN April 11, 1933.

PUMP

Filed Sept. 26, 1931 Inventor Zfizaa ZMzuzaz v April 11, 1933. E, R MUNN l1,903,721

PUMP

Fiied Sept. 26, 1931 4 Sheets-Sheet 4 Inventor ZZyz'a i2-Mu un f www@ `/qliomey Patented Apr. 11, 1933 UNITED s'rrs ELVIN IR. MUNN, OF HUMANSVILLE, MSSO'URI, ASSIGN'OR TO THE M'UNN CORPORATION, .Wj A CORPORATION F MISSOURI PUMP Application filed September 26, 1931. Serial No. 565,355

This invention relates broadly to rotary pumps, and has as its primary object thel provision 0f a novel construction and arrangement of parts, whereby the mechanism involving the features of my invention is adapt'- ed to serve as a pump, or rotary engine or for other purposes.

To this end, the invention consists essentially in the provision of a cylinder having valve communication with intake and outlet manifolds together with a rotor within the cylinder comprising a plurality of disks arranged to partially rotate about a common axis yeocentrically of the cylinder together with a plurality of piston vanes pivotally connecting the disks with the periphery of the cylinder and so arranged relative to the valves controlling communication between the interior of the cylinder and the manifold, as to actuate the valves for first drawing fluid from the intake manifold into the cylinder, and subsequently forcing the fluid from the cylinder into the exhaust manifold to' be carried therefrom, for any desired purpose.

Other objects and advantages of the invention will become apparent from a study of the following description, taken in connection with the accompanying drawings wherein:

Figure 1 is a view of the pump in side elevation.

Figure 2 is an end elevational view of the pump, with one of the heads removed, and certain parts being broken away and shown in section.

Figure 3 is a vertical transverse sectional elevational view through the pump.

Figure 4: is a perspective view of one of the piston vanes.

Figure 5 is a transverse sectional view taken through the eccentric pin forming part of the throw of the crank shaft.

Figure 6 is a detail sectional elevational view taken substantially on the line 6-6 of Figure 2.

Figures 7, 8 and 9 are diagrammatic views o-f the disks formingpart of the rotor.

Referring more in detail to the drawings, it will be seen that the pump includes a circular casing 10 mounted on a base 11 and provided with heads 12 and 13 respectively.

Each head is provided with a bearing 14 within which is rotatably arranged an eccentric 15 and these eccentrics are connected by an eccentric pin 16. The eccentrics 15 and the eccentric pin 16 constitute the throw of a crank shaft 17, and as is apparent, the pin 16 is eccentrically arranged with respect to the center of a cylinder 18 concentrically arranged within the casing 10 and circumferen* tially spaced therefrom. y

rlhe cylinder 18 is connected with the periphery of the casing 10 through the medium of a circular rib 19 dividing the space be* tween the cylinder 18 and the casing 10, into circular intake and exhaust manifolds 2O and 21 respectively. rlhe cylinder 18 makes a close fit with the heads 12, 13 as apparent from a study of Figure 3.

Arranged on the pin 16 and rotatable partially relative thereto are, in the present embodiment of the invention, three disks arranged in end to end relation and including the end disks 22, and the intermediate or center disk 23. Each disk is provided on its periphery with a laterally extending substantially cylindrical hinge shoe 24 provided with a groove elongated longitudinally thereof. Each of the disks 22 has its shoe extending laterally from one side thereof, while the shoe of the disk 23 extends laterally from the opposite sides of said disk.

The shoes 24 are arranged equal distances apart and connected with each shoe is a piston vane 26. Each piston vane 26 is curved longitudinally and at one end thereof is provided with a substantially cylindrical integral hinge pin 27 engaging a shoe 25, and at its relatively opposite end, is provided with a substantially cylindrical hinge pin portion 28 hinged as at 29 to a substantially triangular shaped lug 30 arranged on the periphery of the cylinder 18. The lugs 30 are arranged a substantially equal distance apart, and it will be apparent that the piston vanes provide pivot connections between the ydisks22, 23 andthe cylinder 18. 1

Opposite each piston vane 26, the periphery of the cylinder 1S is provided with a pair of ports 31, 32 controlled by a valve 33, 3&1. The port 31 aifords communication between the a gland 43 for holding intake manifold 20, and the interior of the cylinder, and the valves controlling the ports 31 open inwardly of the cylinder; the ports 32 control communication between the cylinder and the exhaust manifold 21 and the valves 34 open inwardly of said manifold.

Each port 31, 32 is provided with a valve seat 35, and each valve 33, 34 includes a disk like head normally engaged with its seat through the medium of a suitable spring device 36, connected with the stem of the valve and for the stem of the valve there is threaded in the periphery of the casing 10, a guide socket 37. For the stem of each valve 33, there is secured opposite the opening 31 on the outer periphery of the cylinder 18, a perforated guide plate 38.

The fluid inlet for the intake manifold is designated generally by the reference character 39, and the outlet leading from the exhaust manifold 21, by the reference character 40.

From the foregoing, it will be apparent that the liquid is admitted into the intake manifold 20, and as the shaft 17 rotates, the disks 22, 23 will cause the piston vanes to move toward and away from the cylinder during each revolution owing to the fact that the disks are eccentric to the axis of the cylinder 18.

As each piston vane moves inwardly, the valve 33 controlled by that piston vane will move inwardly and fluid from the intake manifold 2() will be drawn through the port 31 into the cylinder 18; as that particular piston moves outwardly toward the periphery of the cylinder, the fluid in the cylinder will be forced outwardly thereof into the manifold 21 under pressure, the pressure of the fluid causing valve 34 to move to an open position.

The fluid from the exhaust manifold 2l passes through the outlet 40 thereof to be used for any desired purpose.

From a stu-dy of Figure 2, it will be noted, that the piston vanes divide the space between the disks 22, 23 and cylinder 18 into three compartments 41, there being one intake and one exhaust valve for each compartment.

For the purpose of preventing leakage of fluid aroundv the longitudinal edges of the piston, packing strips 42 are provided in the side edges of the piston. To prevent leakage of Huid about the shaft 17, there is employed packing 44 in place.

The outer end of the shaft 17 is supported in a bearing stan-dard 45. The shaft 17 is also provid-ed with a pulley wheel 46 whereby the shaft 17 may be Idriven from any suitable source of power.

For lubricating purposes, I provide for cach of the bearings 14 and for the bearing of the shaft 45, a suitable lubricant fitting 47.

The heads 12 and 13 are secured to the cas- G ing 10 by suitable bolts 48.

From the foregoing, it will be seen that I have provided for a compact and convenient arrangement of parts, whereby the mechanism is especially adapted for use as a rotary pump and compressor and with but several slight changes, which will readily present themselves to the skilled, can be readily converted into a rotary engine.

Even though I have herein shown and ldescribed the preferred embodiment of the invention, it is to be understood that the same is susceptible of further changes, modifications and improvements coming within the scope of the appended claim.

Having thus described my invention, what I claim as new is:

A rotary pump of the classv described comprising a pair of circular end members each having a circular recess in the center of its inner face, and a rimy part fastened to the marginal portion of the end members, a cylinder fixed in the casing and having its ends closed by a portion of said endmembers, said cylinder being spaced circumferentially from the rim part of the casing, a circular partition between the rim part and said cylinder and dividing the space between vthe cylinder and the casing into an intake manifold and an exhaust manifold, said cylinder having a plurality of pairs of ports therein, one port of each pair communicating the cylinder with the intake manifold and the other port of each pair connecting the cylinder with the exhaust manifold, spring actuated valves controlling said ports, a pair of disks located in the circular recesses in the end members, a pin having its end eccentrically attached to said disks, a drive shaft connected to one of the disks, a number of disks concentrically arranged on the pin with the outermost disks having their outer faces contacting the inner faces of the end members and portions of the inner faces of the first named disks, an elongated hinge shoe having a portion integrally connected to a part of the periphery of each of the second mentioned disks, each shoe having its ends abutting the end members and each shoe having a substantially semi-circular recess at its forward face, which extends throughout the length of the shoe, inwardly extending lugs on the inner periphery of the cylinder of the same length ofthe shoe having substantially semi-circular recesses therein, substantially arc-shaped piston members having substantiallycircular enlargements at their side edges, one enlargement of each piston member fitting in the recess in a shoe and the other enlargement fitting in the recess of a lug, the other edges of said piston member engaging the inner faces of the end members and having packing means thereon.

In testimony whereof I affix my signature.

ELVIN RQ MUNN.` 

